Carrie Underwood debuted a new “Sunday Night Football” theme song and fans aren’t thrilled about it.

The country singer, who has been performing the NBC’s “Sunday Night Football” theme since 2013, released her song “Game On” that replaces the 2014 song “Oh, Sunday Night.”

In the new version, which was played before the Week 1 matchup between the Chicago Bears and Green Bay Packers, Underwood belts out “Game On” instead of “Ohhhhhhh Sunday night” — a line that fans have grown to know and love. Some people called for the network and Underwood to bring back the old version.